[PATCH 2/2] arm64: dts: qcom: add TP-Link Archer AX55 v1

[Gabor Juhos <j4g8y7@gmail.com>]

Add device tree source for the TP-Link Archer AX55 v1 [1]
which is a dual-band WiFi router based on the IPQ5018 SoC.

At the moment, only the UART, the GPIO LEDs and buttons
are usable, but it makes it possible to boot an initramfs
image on the device.

The device tree can be extended in the future, once support
for other periherals will be available for the platform.

1. https://www.tp-link.com/en/home-networking/wifi-router/archer-ax55/v1/

Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
---
Note: running 'make CHECK_DTBS=y qcom/ipq5018-tplink-archer-ax55-v1.dtb'
shows the following:

    DTC_CHK arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupts: [[0, 62, 4]] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names: ['hs_phy_irq'] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupts: [[0, 62, 4]] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names:0: 'pwr_event' was expected
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#
  <...>/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dtb: usb@8af8800: interrupt-names: ['hs_phy_irq'] is too short
  	from schema $id: http://devicetree.org/schemas/usb/qcom,dwc3.yaml#

This is not caused by the new device tree per se but comes from
the usb@8af8800 node defined in ipq5018.dtsi. Running the check
on 'qcom/ipq5018-rdp432-c2.dtb' shows the same.
---
 arch/arm64/boot/dts/qcom/Makefile                  |   1 +
 .../dts/qcom/ipq5018-tplink-archer-ax55-v1.dts     | 133 +++++++++++++++++++++
 2 files changed, 134 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 39889d5f8e12..d3ba1e22d6dd 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= apq8094-sony-xperia-kitakami-karin_windy.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-db820c.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-ifc6640.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5018-rdp432-c2.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= ipq5018-tplink-archer-ax55-v1.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp441.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp442.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-rdp468.dtb
diff --git a/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts b/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts
new file mode 100644
index 000000000000..1b30d4bc781e
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/ipq5018-tplink-archer-ax55-v1.dts
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+#include "ipq5018.dtsi"
+
+/ {
+	model = "TP-Link Archer AX55 v1";
+	compatible = "tplink,archer-ax55-v1", "qcom,ipq5018";
+
+	aliases {
+		serial0 = &blsp1_uart1;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&led_pins>;
+		pinctrl-names = "default";
+
+		led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_LAN;
+			gpios = <&tlmm 10 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-1 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WAN;
+			gpios = <&tlmm 11 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-2 {
+			/* WLAN 2.4GHz */
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN;
+			function-enumerator = <0>;
+			gpios = <&tlmm 13 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-3 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			gpios = <&tlmm 18 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-4 {
+			color = <LED_COLOR_ID_ORANGE>;
+			function = LED_FUNCTION_WAN;
+			gpios = <&tlmm 22 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-5 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_USB;
+			gpios = <&tlmm 38 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-6 {
+			/* WLAN 5GHz */
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN;
+			function-enumerator = <1>;
+			gpios = <&tlmm 39 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	buttons {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&button_pins>;
+		pinctrl-names = "default";
+
+		button-reset {
+			debounce-interval = <60>;
+			gpios = <&tlmm 25 GPIO_ACTIVE_LOW>;
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+		};
+
+		button-wps {
+			debounce-interval = <60>;
+			gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+	};
+};
+
+&blsp1_uart1 {
+	pinctrl-0 = <&uart1_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&sleep_clk {
+	clock-frequency = <32000>;
+};
+
+&tlmm {
+	button_pins: button-pins-state {
+		pins = "gpio25", "gpio31";
+		bias-pull-up;
+		drive-strength = <8>;
+		function = "gpio";
+	};
+
+	led_pins: led-pins-state {
+		pins = "gpio10", "gpio11", "gpio13", "gpio18", "gpio22",
+		       "gpio38", "gpio39";
+		bias-disable;
+		drive-strength = <2>;
+		function = "gpio";
+	};
+};
+
+&uart1_pins {
+	/*
+	 * Remove "gpio31" from the default pins in order to be able
+	 * to use that for the WPS button.
+	 */
+	pins = "gpio32", "gpio33", "gpio34";
+};
+
+&xo_board_clk {
+	clock-frequency = <24000000>;
+};

-- 
2.43.0